AMIN MACHINERY PVT.LTD. Vitthal Udyognagar, Anand, Gujarat

Positioners provide steel fabrication shops with the most up-to-date equipment for placing bulky fabrications in the ‘downhand’ position in the shortest possible time without the use of cranes and manpower. The positioners tables rotate at accurate and constant variable speeds and tilt through 135° with a high C.G. load rating covering almost all anglers for welding any angular job placed on it. Positioners can be supplied for interfacing with Column and Boom Manipulator. FEATURES:- Robust all steel fabrication Variable or single speed table rotation through 360° Square or round table as desired. with T slots and concentric rings to facilate fast and accurate alignment and clamping. Power Operated Table tilting mechanism through 135°, including limit Switches to prevent over-run. Centre spindle carried in sealed pre-loaded Timken bearings or, depending on capacity Large diameter crossroll bearing is provided. Accurate machine cut steel gears. Efficient built-in earthling. Totally enclosed electrical motors including electromagnetic breaks. Pendant remote push button controls for all movements, together with speed potentiometer

Capacity from 10 MT to 500 MT   AMIN’s Traversing Rotators (Conventional / Self Aligning) follow the well established reputation of their static counter-parts for ease of use and reliability. We are providing an economical and practical platform for all cylindrical vessel rotating problems.  The Traversing Rotator ranges are all bogie mounted to carry vessels of various lengths, and to allow for traversing, in addition to rotation at the work site.  Traversing Rotators are built to the highest standards with quality materials and components :-- Robust, all-steel construction- Inverter controlled traversing and rotation at welding speeds.- All rollers of the Drive Section positively driven. Whatever your requirement – large or small, short or long – you will find that AMIN has the solution in Stationary or Traversing Rotators.

The design of the AMIN Self - aligning Rotators incorporates many hidden features, which are unknown to our competitors.With the AMIN Self-aligning construction the trunnion brackets which support the rubber typed wheels automatically align themselves when changing from one diameter to another, no manual adjustment whatsoever is required.Each section supports the vessel on four points ensuring better traction, and on machines of 3 T to 500 T capacity and upwards all four wheels of the drive section are positively driven. This four point suspension is an added advantage when on handling thin walled vessels.The two top leading wheels of the drive section incorporate clutches which are loosened prior to  loading the vessel and the top wheels can rotate freely when the vessel is loaded; thus  regardless of weight if the vessel is lowered centrally between the frames, or firstly on to one  wheel only, no damage can be sustained by the transmission.One problem in the welding of large diameter heavy vessels is the lining up of the  strakes. To facilitate this problem of lining up, the AMIN Self-Aligning Rotators can be supplied with an arrangement whereby the trunnion brackets which support the rubber typed wheels can be moved across the frame by lead screw so that the vessel can raised or lowered by widening the trunnion centers or bring them closer together and in addition a secondary screw adjustment can be provided to move both the trunnion brackets either side of the center line approximately 38 mm. In order to ensure that the four wheel point support can be maintained over an extended range of diameters the SAR. Frames can be supplied so that a spacer can be inserted in the main frame between the trunnion centres so that they are capable of handling vessels upto 11 metres or more in diameter.

Rotary turn tables are used for precise positioning in the flat or horizontal position. High-precision, cost effective method of rotating a workpiece around a vertical axis.

Motorized Material Transfer Wagon / Trolley is meant for transferring material from one bay (shop) to another.Wagon/Trolley moves on Indian standard rail section grouted in ground. Material Transfer Wagons / Trolleys are manufactured with load carrying capacities from 5MT to 500 MT capacities as per customer's requirement. Salient features of the Transfer Wagon/Trolley are as follows: Transfer Wagon/Trolley has two drive wheels and two idler wheels. Power through both drive wheels has separate gear boxes and electric motors. Both motors are synchronized through AC Variable Frequency Drive. Depending upon the load bearing capacity of transfer wagon/trolley, number of drive wheels and idler wheels are provided. Radio Remote Control is provided to move wagon/trolley to and fro. Spring buffers / Disc springs, Two way limit switches are given as safety measures. Under voltage / over voltage protection is provided into control panel. Transfer Wagon / Trolley is equipped with Siren and Bacon Lights. Motorised Cable Reeling Drum is provided for cable feeding.  

Pipe bending is a process wherein the pipe to be bend is heated to a specified temperature by high frequency induction heating coil and bending is done in hot condition. The pipe is clamped at the forward end by the radius arm clamp. The tail end of the pipe is locked in the pushing carriage clamp. The pushing carriage moves on the main track as it is fitted with a chain, which is driven by a DC Motor at a fixed constant speed through a gearbox.When current is supplied through high frequency current transformer to the coil, heating of pipe starts. The heating temperature is strictly controlled depending upon the material of the pipe and its wall thickness. When the specified temperature is attained, the DC Motor is started at a preset speed which drives the pushing carriage in the forward direction. As a result the pipe begins to advance being bent simultaneously. Immediately after the bending process, quenching will follow. The Radius Arm is designed so that the pipe will be bent by the same distance as the one between the center of a pair of rollers and the axis point of the arm. The arm rotates in natural mode around the pivotal point. The heated portion begins to transform its elasticity due to the difference of strength between the heated and unheated portion of the pipe. BRIEF DESCRIPTION OF PIPE BENDING MACHINE :- Pipe Bending Machine consists of the following : Hydraulic system. Induction heating unit. DC drive system for constant movement of pipe during bending. Water cooling system for quenching. Optical pyrometer for temperature monitoring. Air cooling system. The mechanical system. 1. HYDRAULIC SYSTEM :- The hydraulic system consists of a power pack and is designed for 10,000 Psi working pressure. It consists of total of twelve cylinders and are used as follows:Two cylinders for clamping the pipe on pushing carriage.Two cylinders for clamping the pipe on forward carriage.Four cylinders for fixing the pivot base in pivot track.Four cylinders for fixing the forward carriage on radius arm.The hydraulic system is equipped with special type of return valve. 2. PIPE HEATING UNIT :- The Pipe Bending Machine is equipped with 500 KW, 1 KHZ power supply; a matching transformer kept on a matching transformer stand which can be moved in three direction viz. forward/reverse; up/down and left/right direction and so the air, induction and water quench coils are concentric. 3. DC DRIVE SYSTEM :- DC drive system consists of a DC motor and a gearbox. The DC motor is run with a DC drive. The DC motor is fitted with a taco generator to have a precise speed control. The pushing is controlled with a chain mechanism, DC motor & gear assembly in forward and reverse direction.

Headstock and Tailstock positioners generally handle the rotation of long work pieces around a horizontal centreline. The Headstock is generally powered and the Tailstock is free-wheeling with no other support under the work piece. Long complex structures can be turned to make the work execution easier for the welder. In some cases only a Headstock unit is required as shown in the pipespool fabrication arrangement depicted below. AMIN make Head and Tailstock Positioners can be used for a variety of parts and suitable for long objects. Typically a Head & Tailstock Welding Positioner is used for long rectangular shapes that must be supported from both ends. Both fixed height rotation centerline and power elevating models are available for ergonomic placement of the weldment. Head stock-Tail stock Positioners capacity ranges up to 100 Tons and various flexibility in job handling. Other versions of machines available with variable height adjustments (center height adjustment to cater larger job swing) and other control possibilities. With a large rotation speed range all welding processes can be accommodated, such as MIG, TIG, SAW welding. Apart from standard configuration, advance versions are available including elevation of Head Stock- Tail stock and movement of tail stock over rail.

Our company is engaged in offering manufacturing and supplying a wide range of Wind Mill Tower/ Power Rotator, which is available in various speeds, adjustment and diameters as per the clients’ specific requirements. Our range finds usage in Welding, Polishing and Assembling of the cylinder body in diverse industries.The hydraulic fit-up rotators are usually used for fitting up of wind towers / cone pipe assembly welding because of the diameter difference between two sides of the pipe. We have to change the position of the pipe in one end to make the central axes line is in horizontal level, then, the pipe or tank can be rotate smoothly. Hydraulic adjust the center to center spacing of roller group, in accordance with the diameter variations of work piece.  

AMIN PANELS, One of the biggest manufacturer of low voltage Electrical & Electronics Control /Power panels, started its operation 1974.The plant is located on a 5km site at Anand (V.U.Nagar), near Baroda/Ahmedabad (Gujarat). It commands a major market share in its product range category. AMIN PANEL : Major strength of Amin Panels are modern manufacturing facilities which include sheet metal workshop equipped with shearing Machine, Plate Bending Press Break Machine, Painting technology with bake up oven, tool room quality control systems including Test Benches as per IS and IEC standards and well equipped design center. In addition to above modern equipment & machinery, we have skilled manpower, highly qualified experienced Engineers, supervisors, Inspector & services technicians for providing prompt & best services after sales requirement, also we have design center, which design the panel to meet the client’s requirement. In addition to above, we manufacture panels strictly adhering to the relevant IS / IEC standers, electricity rules and other applicable Specifications prevalent and as updated from time to time in  Our Range of Product is as per follows :- Motor Control Center (M.C.C.) / (Power Control Center (P.C.C.) :- Bus bar  rating upto 3000 Amps. Compact compartmentalized design, extension on either side in future. Selection for top/bottom cable/bus duct entry. L.T.Distribution Boards / Switch Boards / Feeder Piller Design as per customer suitable size / specification. Floor / Wall Mounting option as per requirement. Automatic Power Factor Correction (A.P.F.C./ Capacitor) Panel Ability to maintain a consistent high Power Factor. Eliminates the panelty of low power factor levied by electric utilities. Facility to select different Capacitor Bank for selection. Up to 400 KVAR. Auto / Manual mode selection Facility. Increase life of Capacitor. Diesel Generator Set Control Panel Control panel suitable up to 1500 KVA capacity Choice for parallel operation (synchronizing operation) Auto Mains Failure (A.M.F.) Panel.  Digital, Analogue, Process Parameter Battery Charger panel. Process Automation (Instrumentation) Control Panel / Desk PLC Based suitable for I/O Application, Optional with MMI Interface Keypad. AC / DC Drive Based Suitable Complete with input Choke, In Line & Load  Harmonic Filter, Facilty to Synchronizing two or motoe with techo/encoder  feedback option, Interlock with other process. Control Desk with MIMIC Display option with different sizes.  Panel Boxes (Ready to wire), Terminal Junction Box , PB Station, Bus Duct. Different Size up to IP 65 Protection. Floor / Wall / Pedstal Mounting option. We undertake modification (Renovation) job of existing old system (Panels) to     new system, which suits to all latest specification.

Conventional Rotators are built in capacities from 1T to 2000 tonnes. The frame is of robust fabricated construction and is machinened on the top and underneath to ensure perfect alignment. Both the drive and the idler frames are provided with robust fabricated and machined wheel brackets which support the axles and bearings of the rollers. According to capacity the Rotators are provided with all rubber tyres, or Polyurethane tyres and separate all steel overload wheels, or can be of course be supplied with cast steel wheels. The Rotator base fabrication, or chassis, is designed and fabricated to carry the weight of the vessel / Job and incorporates a contingency for shock loading. It is important that the design eliminates any distortion which can lead to misalignment of the rollers. The drive section comes under the biggest strain when the vessel /Job is being loaded. It is physically impossible for a crane operator to position the vessel so that it contacts with both sets of rollers at the same time.  If the  work-piece one roller before  being supported on all the rollers, the first roller will receive a full shock load which puts a considerable force on to the drive. We have endeavored to incorporate a good overload margin to absorb this shock load.  

The Columns of both the RC and TRC types are supported on precision crossroll bearings. The larger machines have pre-loaded cross-roll bearings, which eliminates the free play, and which is extremely important since any play in the cross-roll bearing is considerably increased at the end of the boom when it is in the fully raised and fully extended position. Column rotation can be motorized, but in any case all “AMIN” machines have a manual locking arrangement to lock the column in any of the 360°   Positions. The boom saddle, or carriage, is fitted with rollers which travel along the machine slide-ways. Each of the rollers is fitted with 2 pre-loaded Taper Roller bearings carried on eccentric shafts. The Rollers can be adjusted for wear and tear and also for precision and vibration-less travel. Boom elevation is through high torque AC geared motor incorporating an  electromagnetic brake, the final drive being through rack and pinion. Some of our competitors still employ chain elevation which we consider unsatisfactory since it is impossible to eliminate “bounce”. Bounce accumulates particularly where a Welder’s platform or Lay Trough is fitted and is aggravated by any movement of the welder. Some of our competitors use lead-screw elevation which is unsatisfactory since flux, dust etc. accumulate and the lead-screw then becomes locked in the lead-screw nut. Both chain and lead-screw method are used by this company and discarded some years ago. A further important point is that the actual boom elevation and boom traverse drive is mounted on the saddle itself. “AMIN” ensure that the boom / saddle / welding head, etc. are fully counterbalanced by a weight which moves up and down inside the column, which takes considerable strain away from the elevation gearing. The counter balance weight is connected to the saddle by a heavy duty wire rope which incorporates an anti-fall device. The boom traverse drive is achieved through AC Frequency Variable Drive & AC Motor, reduction gearing and rack and pinion drive. A most important feature of the “AMIN” machine is the design of the machine slide-ways along-with the very wide rollers, which are carried in the saddle, traverse. Speeds :- We understand that the Rotators and Column & Boom Manipulators may be used for cladding operations and we should mention that in these cases very slow movements are essential. We can incorporate in the “AMIN” traverse drive 2  speed gear box which enables the boom to be retracted very slowly, e.g. – The speeds could be 5 mm -  100 mmSecond gear 50 mm  - 1000 mm With these speeds it is possible to arrange for the boom to be retracted at very slow speed when spiral cladding, using either the strip method or the wire electrode method. Deflection :- We have mentioned above that one way of overcoming this matter is by using a precision cross-roll bearing on which the column rotates. The design of the slide-ways and the very wide service area on which the supporting rollers traverse also helps. However, we have had very considerable experience in Column and Boom design and developed a method of fabrication which enables us to offer Columns and Booms with a much better deflection figure than any of our competitors. We do in fact build in five different designs in order to ensure that the Column and Boom is correct with controlled deflection relative to height, boom travel and weight to be carried.